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Finding the Fourth Proportional to 400.03, 600.05 and 253.93

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Solution

The fourth proportional to 400.03, 600.05 and 253.93 is: 380.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.03 : 600.05 = 253.93 : x
  2. Step 2: Convert to fraction form
    400.03/600.05 = 253.93/x
  3. Step 3: Cross multiply
    400.03x = 600.05 × 253.93
  4. Step 4: Simplify right side
    400.03x = 152,367.93
  5. Step 5: Solve for x
    x = 152,367.93/400.03
  6. Step 6: Final answer
    x = 380.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.